Saltwater assassin snail?
I'm new to saltwater aquariums (inherited a couple of established tanks). I just added some margherita snails (no clue if I'm spelling that right) to my 30 gallon aquarium to help with algea control.
Within 2 minutes of adding the margarita snails, what I originally thought was one of my small hermit crabs attached itself to one of the snails and killed it.
The next day, I was able to see that this was actually a snail in a shell similar in appearance to my hermit crab shells. The snail has a hook-like structure that it uses to reach in the shell of the other snail. It also can apparently drill a hole in the shell because I find this on the shell when I separate them. (I'm currently down 2 more margherita snails).
Have any of you ever heard / experienced a saltwater assassin snail? This snail does not look at all like the freshwater snail.